| a retrospective serologic survey for anaplasma spp. infection in three bighorn sheep (ovis canadensis) populations in california. | using an indirect immunofluorescence assay, we determined the prevalence of anaplasma-reactive antibody in three herds of bighorn sheep, each a different subspecies and occupying a different habitat in california (usa). antibodies to anaplasma spp. were identified in none of twenty california bighorn (ovis canadensis californiana) sampled from the mt. baxter herd, 11 of 17 peninsular bighorn (o. canadensis cremnobates) sampled in the santa rosa mountains, and all 20 desert bighorn (o. canadensis ... | 1993 | 8258852 |